The old says about time

One of these days is none of these days.
拖延時日，終難實現。
Procrastination is the thief of time.  
因循拖延是時間的大敵；拖延就是浪費時間。
Time undermines us .
人生易老。
Truth is the daughter of time.
真理是時間的女兒。
Weep no more, no sigh, nor groan. Sorrow calls no time that's gone.
別哭泣，別嘆息，別呻吟;悲傷喚不迴流逝的時光。
True love shows itself in time of need.
患難顯真情。
Time is a file that wears and makes no noise.
時間如銼，細磨無聲。
Time flies like an arrow ,and time lost never returns.
光陰似箭，一去不返。
Time is the greatest teacher.
時間是最好的老師。